/* $NetBSD: amdsmn.c,v 1.14.4.3 2023/08/22 16:07:34 martin Exp $ */ /*- * Copyright (c) 2017, 2019 Conrad Meyer * All rights reserved. * * NetBSD port by Ian Clark * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: amdsmn.c,v 1.14.4.3 2023/08/22 16:07:34 martin Exp $ "); /* * Driver for the AMD Family 15h (model 60+) and 17h CPU * System Management Network. */ #include #include #include #include #include #include #include #include #include #include #include #include "amdsmn.h" #include "ioconf.h" #define F15H_SMN_ADDR_REG 0xb8 #define F15H_SMN_DATA_REG 0xbc #define F17H_SMN_ADDR_REG 0x60 #define F17H_SMN_DATA_REG 0x64 struct amdsmn_softc { kmutex_t smn_lock; uint8_t smn_addr_reg; uint8_t smn_data_reg; struct pci_attach_args pa; pci_chipset_tag_t pc; pcitag_t pcitag; }; static const struct pciid { uint16_t amdsmn_deviceid; uint8_t amdsmn_addr_reg; uint8_t amdsmn_data_reg; } amdsmn_ids[] = { { .amdsmn_deviceid = PCI_PRODUCT_AMD_F15_6X_RC, .amdsmn_addr_reg = F15H_SMN_ADDR_REG, .amdsmn_data_reg = F15H_SMN_DATA_REG, }, { .amdsmn_deviceid = PCI_PRODUCT_AMD_F17_RC, .amdsmn_addr_reg = F17H_SMN_ADDR_REG, .amdsmn_data_reg = F17H_SMN_DATA_REG, }, { .amdsmn_deviceid = PCI_PRODUCT_AMD_F17_1X_RC, .amdsmn_addr_reg = F17H_SMN_ADDR_REG, .amdsmn_data_reg = F17H_SMN_DATA_REG, }, { .amdsmn_deviceid = PCI_PRODUCT_AMD_F17_6X_RC, .amdsmn_addr_reg = F17H_SMN_ADDR_REG, .amdsmn_data_reg = F17H_SMN_DATA_REG, }, { .amdsmn_deviceid = PCI_PRODUCT_AMD_F17_7X_RC, /* or F19_0X */ .amdsmn_addr_reg = F17H_SMN_ADDR_REG, .amdsmn_data_reg = F17H_SMN_DATA_REG, }, { .amdsmn_deviceid = PCI_PRODUCT_AMD_F17_AX_RC, /* or F19_4X */ .amdsmn_addr_reg = F17H_SMN_ADDR_REG, .amdsmn_data_reg = F17H_SMN_DATA_REG, }, { .amdsmn_deviceid = PCI_PRODUCT_AMD_F19_1X_RC, .amdsmn_addr_reg = F17H_SMN_ADDR_REG, .amdsmn_data_reg = F17H_SMN_DATA_REG, }, { .amdsmn_deviceid = PCI_PRODUCT_AMD_F19_6X_RC, .amdsmn_addr_reg = F17H_SMN_ADDR_REG, .amdsmn_data_reg = F17H_SMN_DATA_REG, }, { .amdsmn_deviceid = PCI_PRODUCT_AMD_F19_7X_RC, .amdsmn_addr_reg = F17H_SMN_ADDR_REG, .amdsmn_data_reg = F17H_SMN_DATA_REG, }, }; static int amdsmn_match(device_t, cfdata_t, void *); static void amdsmn_attach(device_t, device_t, void *); static int amdsmn_rescan(device_t, const char *, const int *); static int amdsmn_detach(device_t, int); static int amdsmn_misc_search(device_t, cfdata_t, const int *, void *); CFATTACH_DECL3_NEW(amdsmn, sizeof(struct amdsmn_softc), amdsmn_match, amdsmn_attach, amdsmn_detach, NULL, amdsmn_rescan, NULL, 0); static int amdsmn_match(device_t parent, cfdata_t match, void *aux) { struct pci_attach_args *pa = aux; size_t i; if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_AMD) return 0; for (i = 0; i < __arraycount(amdsmn_ids); i++) if (PCI_PRODUCT(pa->pa_id) == amdsmn_ids[i].amdsmn_deviceid) return 2; return 0; } static int amdsmn_misc_search(device_t parent, cfdata_t cf, const int *locs, void *aux) { if (config_probe(parent, cf, aux)) config_attach(parent, cf, aux, NULL, CFARGS(.locators = locs)); return 0; } static void amdsmn_attach(device_t parent, device_t self, void *aux) { struct amdsmn_softc *sc = device_private(self); struct pci_attach_args *pa = aux; size_t i; mutex_init(&sc->smn_lock, MUTEX_DEFAULT, IPL_NONE); sc->pa = *pa; sc->pc = pa->pa_pc; sc->pcitag = pa->pa_tag; for (i = 0; i < __arraycount(amdsmn_ids); i++) if (PCI_PRODUCT(pa->pa_id) == amdsmn_ids[i].amdsmn_deviceid) { sc->smn_addr_reg = amdsmn_ids[i].amdsmn_addr_reg; sc->smn_data_reg = amdsmn_ids[i].amdsmn_data_reg; } // aprint_normal(": AMD Family 17h System Management Network\n"); aprint_normal(": AMD System Management Network\n"); pmf_device_register(self, NULL, NULL); amdsmn_rescan(self, NULL, NULL); } static int amdsmn_rescan(device_t self, const char *ifattr, const int *locators) { struct amdsmn_softc *sc = device_private(self); config_search(self, &sc->pa, CFARGS(.search = amdsmn_misc_search)); return 0; } static int amdsmn_detach(device_t self, int flags) { struct amdsmn_softc *sc = device_private(self); pmf_device_deregister(self); mutex_destroy(&sc->smn_lock); aprint_normal_dev(self,"detach!\n"); return 0; } int amdsmn_read(device_t dev, uint32_t addr, uint32_t *value) { struct amdsmn_softc *sc = device_private(dev); mutex_enter(&sc->smn_lock); pci_conf_write(sc->pc, sc->pcitag, sc->smn_addr_reg, addr); *value = pci_conf_read(sc->pc, sc->pcitag, sc->smn_data_reg); mutex_exit(&sc->smn_lock); return 0; } int amdsmn_write(device_t dev, uint32_t addr, uint32_t value) { struct amdsmn_softc *sc = device_private(dev); mutex_enter(&sc->smn_lock); pci_conf_write(sc->pc, sc->pcitag, sc->smn_addr_reg, addr); pci_conf_write(sc->pc, sc->pcitag, sc->smn_data_reg, value); mutex_exit(&sc->smn_lock); return 0; } MODULE(MODULE_CLASS_DRIVER, amdsmn, "pci"); #ifdef _MODULE #include "ioconf.c" #endif static int amdsmn_modcmd(modcmd_t cmd, void *opaque) { int error = 0; #ifdef _MODULE switch (cmd) { case MODULE_CMD_INIT: error = config_init_component(cfdriver_ioconf_amdsmn, cfattach_ioconf_amdsmn, cfdata_ioconf_amdsmn); break; case MODULE_CMD_FINI: error = config_fini_component(cfdriver_ioconf_amdsmn, cfattach_ioconf_amdsmn, cfdata_ioconf_amdsmn); break; default: error = ENOTTY; break; } #endif return error; }